I cut the tamiya plug off and put 4mm bullet connecters on. Not sure what battery has a Tamiya connection. I'm sure you can get an adapter on ebay or local hobby shop for almost any battery.

So me and my buddy's just got into onroad racing,real grass roots but fun.
anyway as a big tamiya kit fan I bought a tt02 hoping all the others would follow suit.one did,but the rest of the guys flaked out and got the brushed traxxas rtr car.neat as it is I'm not a rtr guy.
issue is these things are smoking fast on lipo.I thought about just buying a traxxas esc and motor to even the playing field, but I can go brushless....maybe a 15.5.....but what pinion should I run and be safe with temps?14 16?
thanks guys.

If you buy the same motor.. your TT02 will be faster. You'll just need to match their FDR.

The factory esc will not pull a 12 turn 550.....I don't think so anyway.

Try it! worst case, you'll need to buy a $30 brushed ESC later. :-)

Has anyone tried a titan 550 12t on the tamiya esc?
hold on......ill try it and get back to ya....

The traxxas ratio is 9.49
I can get to that with a 19tooth pinion.....
ill run this thing hard on lipo and see what the esc says....

With that gear ratio, you should be fine.

you think just the 25 tooth pinion will keep up with the 4tec.....I tried the motor and with some mods it would work.but clapping the cover down,it wasn't happy.I pulled it out.
also Robinson pinion gears seem to be off from the tamiya mesh just a hair.had to put motor in 18 tooth holes to get proper mesh(cover off)
I literally done all this in 10 mind,ill mess with it more this evening and really see what the issue is with the motor fitment.

Tamiya gears are metric 48 pitch. You need to buy a metric 48 pitch gears standard 48 pitch won't work right.

"metric 48 pitch" is like saying metric inches. Metric gear pitch is expressed in module. The gears in the TT02, TT01, and Mini's are .6module. Smaller numbers mean smaller teeth. Module 0.6 is "close" to 48 pitch. Which sucks, becuase you ~can run them~ but it's ugly.

Robinson Racing makes .6 mod gears.

Metric 48 and .6 are the same thing I've heard them as both.

Had to grind away some material off the cover to make room for the longer shaft of the 550.
19 tooth tamiya pinion....and she's hot,super smooth.
ground off most of the steering stops,and we have a race car...
those traxxas guys will not know what hit them.